Be familiar with your pet’s health status, and check with your vet to make sure no essential oils are contraindicated for your pet due to its breed or a health condition.
Observe your pet’s reaction to essential oils, and stop using them if you observe any adverse reactions.
Never use essentials oils for pets around delicate areas, including the eyes, ears, nose, and genitals.
Do not add essential oils to your pet’s food or drinking water unless instructed to by your vet.
Do not use essential oils with puppies under 10 weeks of age.
Do not use oils on epileptic pets who are prone to seizures.
If your pet is pregnant or nursing, check with your vet before using any essential oils and be especially careful with introducing her to essential oils (that includes your own use in her vicinity).
Source: Essential Oils for Pets: The Best & Worst Oils to Help Your Furry Friends By Annie Price (CHHC) posted in Dr. Axe site.